Natural dyes generally have lower colorfastness compared to synthetic dyes, but proper techniques can improve their durability. Factors affecting colorfastness include:
- Mordant selection: Different mordants create varying levels of permanence
- Fiber type: Natural fibers like wool and silk typically hold dyes better than synthetics
- Light exposure: Many natural dyes are sensitive to UV light
- Washing conditions: Hot water and harsh detergents can cause fading
To maximize colorfastness:
- Use appropriate mordants
- Store naturally dyed items away from direct sunlight
- Wash in cool water with mild soap
- Consider overdyeing for deeper, more lasting color